<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索商品行 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append"  icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <!-- 添加商品按钮 -->
          <el-button type="primary" @click="toAdd">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table border stripe :data="goodsList">
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="120px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="80px"></el-table-column>
        <el-table-column label="创建时间"  prop="add_time" width="160px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column width="130px" label="操作">
          <template slot-scope="scope">
            <el-button type="primary" size="mini" icon="el-icon-edit"></el-button>
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="deleteGoods(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[10, 20, 30, 40]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表数据
      goodsList: [],
      // 总共的商品数量
      total: 0
    }
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) this.$message.error('获取列表数据失败')
      this.goodsList = res.data.goods
      this.total = res.data.total
      this.$message.success('商品列表获取成功')
      // console.log(this.goodsList, this.total)
    },
    /*
      handleSizeChange当每页大小变化时的函数
      handleCurrenChange当页码变化时的函数
     */
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      console.log(this.queryInfo.pagesize)
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      console.log(this.queryInfo.pagenum)
      this.getGoodsList()
    },
    deleteGoods(id) {
      this.$confirm('确认永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const { data: res } = await this.$http.delete(`goods/${id}`)
        if (res.meta.status !== 200) return this.$message.error('删除商品失败')
        this.$message.success('删除商品成功')
        this.getGoodsList()
      }).catch(() => {
        this.$message.info('已取消删除')
      })
    },
    // 跳转到添加商品页面
    toAdd() {
      this.$router.push('goods/add')
    }
  },
  created() {
    this.getGoodsList()
  }
}
</script>
<style lang="less" scoped>
</style>
